import java.util.*;

class Yuki51 {
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int w = sc.nextInt();
    int d = sc.nextInt();
    for(int i=d; i>1; --i){
      int a = w/(i*i);
      w-=a;
    }
    System.out.println(w);
  }
}